WMSIC Electronic Components

JSMSEMI LM339

ModelLM339
PackageSOP-14
BrandJSMSEMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
JSMSEMI LM339
Type
JSMSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JSMSEMI
Electronic Component
LM339
Electronic Component
1
Package
SOP-14
Electronic Component
Comparator
Electronic Component
0.25g
Power Supply
2V~32V
Electronic Component
1
Electronic Component
BM0225749293
Operating Temperature
0℃~+70℃
Comparator
Electronic Component
Output
DTL;TTL;CMOS
Output Type
Electronic Component
Static Current(Iq)
1.1mA
(tpd)
150ns

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

LM339 产品概述

概要

LM339 是一种由杰盛微(JSMSEMI)生产的四路比较器集成电路,广泛应用于各种电子系统中的信号比较和检测。以下是对 LM339 的详细介绍,包括其关键参数、特性、应用场景以及使用注意事项。

基本参数

  • 传播延迟时间: 1.4 微秒(μs)
  • 商品分类: 比较器
  • 工作温度: 0℃ ~ +70℃
  • 工作电压: 2V ~ 36V
  • 比较器数: 四路
  • 输入偏置电流(Ib): 57 nA
  • 输入失调电压(Vos): 1.5 mV

封装和品牌

  • 封装: SOP-14(小外形平面封装,14 引脚)
  • 品牌: 杰盛微(JSMSEMI)

功能特性

LM339 是一种多功能的四路比较器,每个比较器都具有独立的输入和输出。以下是一些关键的功能特性:

  1. 宽工作电压范围: LM339 支持从 2V 到 36V 的宽工作电压范围,这使得它可以适应各种不同的应用场景,从低功耗设备到高电压系统。

  2. 低输入偏置电流: 输入偏置电流仅为 57 nA,这意味着在比较过程中,输入端不会消耗太多的电流,特别适合于高阻抗信号源。

  3. 低输入失调电压: 输入失调电压为 1.5 mV,这确保了比较器在进行信号比较时具有高精度和稳定性。

  4. 快速传播延迟时间: 传播延迟时间为 1.4 μs,这使得 LM339 适用于需要快速响应的应用场景,如实时信号处理和监控系统。

  5. 多路比较功能: 每个 LM339 包含四个独立的比较器,这使得它可以同时处理多个信号比较任务,提高了系统的整体效率和灵活性。

应用场景

LM339 因其灵活性和高性能,广泛应用于以下几个领域:

  1. 信号检测和比较: 在各种自动控制系统中,LM339 可以用于检测和比较不同信号,以实现阈值检测、零交叉检测等功能。

  2. 数据采集系统: 在数据采集系统中,LM339 可以作为前端信号处理模块,用于比较和处理来自传感器的信号。

  3. 电源监控系统: LM339 可以用于监控电源电压,实现过压、欠压保护等功能。

  4. 工业控制系统: 在工业控制系统中,LM339 可以用于实现各种逻辑判断和信号处理任务,如温度控制、压力控制等。

  5. 消费电子产品: 在消费电子产品如音频设备、视频设备中,LM339 也可以用于信号处理和比较任务。

使用注意事项

  1. 电源连接: 确保正确连接电源引脚,并注意工作电压范围以避免损坏芯片。

  2. 输入保护: 对于高阻抗信号源,建议在输入端添加保护电阻以防止静电损伤。

  3. 输出负载: 注意输出端的负载能力,避免过载导致比较器输出失常。

  4. 温度控制: 确保操作环境温度在指定范围内(0℃ ~ +70℃),以确保芯片的可靠性和稳定性。

  5. 布局设计: 在 PCB 设计时,尽量减少信号线的长度和干扰,以提高系统的整体性能。

总结

LM339 是一种功能强大、性能优异的四路比较器集成电路,适用于广泛的电子系统应用。其宽工作电压范围、低输入偏置电流、低输入失调电压以及快速传播延迟时间,使其成为信号比较和检测领域的一种理想选择。通过了解其参数和特性,并遵循正确的使用注意事项,可以充分发挥 LM339 的潜力,实现高效可靠的系统设计。

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